The relationships make the system
Goals, people, institutions and technology shape each other. Start with the larger picture.
Try a thought experiment
Imagine a shared home trying to coordinate everyday work. A better notification may help, but it does not decide who takes responsibility, how people agree or when someone can say no.
Where would you begin?
Start with who is affected, what they need and which choices belong to them.
An illustrative question to explore, with more than one useful answer.